Alexander V of Australia (full name: Alexander George Benjamin William) is the current King of Australia. He is the eldest son of his predecessor, Alexander IV, and ascended to the throne at the age of 21 in 2189 after the sudden death of his father. After coronation, Alexander continued his studies at the University of Sydney, during which the 26-year-old King met his future wife Ingrid in 2194. The couple married in 2196, and had their first child a year later, in 2197. Their three children — William, Elizabeth and Christopher — where each born two years apart. William is currently Alexander's heir apparent.

His full title is: His Majesty Alexander the Fifth, by the Grace of God Sovereign of the Commonwealth of Australia and her States and Territories, Defender of the Faith, Commander-in-Chief of the Commonwealth Defence Force.